It was interesting listening to Brad's post game last night. He said that he ignores the topic of home vs road with the team. "In my 11 years as a head coach, I probably haven't talked about road and home five times with our team... If you start talking about that, you find excuses in both places."
At the end of the day it's very difficult to win on the road in the NBA playoffs, especially if you haven't established yourself as a superior NBA team. This young group is basically learning on the fly with little margin for error. At the end of the day the Celtics rely on 110% effort and execution for 48 minutes.
I also got the vibe that Cleveland was running some sets that the team wasn't necessarily prepared for. Brad didn't outright say it but it sounds like he feels the need to tinker with lineups/rotations.